SID

• Sid (given name), includes a list of people with the name ==Science and technology==

• Sound Interface Device: the MOS Technology 6581 sound-generating chip used in some Commodore computers • Security Identifier, used by Microsoft • Sid blood group system • Saab Information Display in cars • Slew-induced distortion, in an amplifier • Source to image-receptor distance, in radiology • Speed Indicator Device, a vehicle-activated illuminated sign • Sudden ionospheric disturbance, caused by a solar flare • Surface-induced dissociation, in mass spectrometry • System identification number, in wireless telephony • Source Identification codes, identifying marks on optical discs introduced by the International Federation of the Phonographic Industry • mSin3 interaction domain, a transcriptional repressor domain • .sid, MrSID image file extension • Sid (Debian), the code name for the 'unstable' distribution of the operating system ==Entertainment==

• Sid (band), a Japanese rock band • Síd, a fairy mound in Irish folklore • Superman Is Dead, or S.I.D., an Indonesian rock band • Sid Vere, a fictional character from Doctors • The given name of the Cookie Monster is Sid. ==Transport==

• Standard instrument departure, flight procedure • Amílcar Cabral International Airport, Sal Island, Cape Verde • Sidcup railway station (National Rail station code), London, England ==Organizations==

• Danish General Workers' Union, former trade union in Denmark • Security and Intelligence Division, Singapore's foreign intelligence agency • Servizio Informazioni Difesa, the Italian military secret service 1965-1977 • Service for Research and Documentation, the Serbian intelligence agency • Society for Information Display • Society for International Development • Sport-Informations-Dienst, German sports media service • Special Investigations Division (disambiguation) ==Places==

• Šid, Vojvodina, Serbia • Šíd, village in Slovakia • River Sid, in Devon, England ==Other uses==

• Status–income disequilibrium, a political term • Sports information director • Self-identification or self-id • Source Identification (SID) codes, a manufacturer identification method for optical disc production used by the International Federation of the Phonographic Industry. == See also ==